Biochemical methane potential (BMP) of agro-food wastes from the Cider Region (Spain) |
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Authors: | Nieto P P Hidalgo D Irusta R Kraut D |
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Affiliation: | CARTIF Centro Tecnológico, División de Medio Ambiente, Parque Tecnológico de Boecillo, 205, 47151 Boecillo, Valladolid, Spain E-mail: dolhid@cartif.es. |
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Abstract: | An inventory of agro-food industry organic waste streams with a high potential for biogas transformation was studied in a logistically viable area (Cider Region, Asturias, Spain). Three industries were selected as the most viable ones: livestock, dairy and beverage. The potential for methane production from six wastes (beverage waste, BW; milled apple waste, MA; milk waste, MK; yogurt waste, YG; fats and oils from dairy wastewater treatment, F&O and cattle manure, CM) at five different substrate:inoculum ratios (0.25, 0.50, 0.75, 1.00 and 1.50) was evaluated in laboratory batch assays. Obtained methane yields ranged from 202-549 mL STP CH(4)·g VS waste(-1), and the methane content in biogas ranged from 58-76%. The ultimate practical biochemical methane potentials were slightly affected by the substrate:inoculum ratio. The estimation of the regional fluxes of waste and methane potentials suggests anaerobic digestion as a sustainable solution for the valorization of the organic wastes generated in this Region. |
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